+/** Returns non-zero if operation must always be placed in the start block. */
+static inline int is_op_start_block_placed(const ir_op *op) {
+ return op->flags & irop_flag_start_block;
+}
+
+/** Returns non-zero if operation is a machine operation */
+static inline int is_op_machine(const ir_op *op) {
+ return op->flags & irop_flag_machine;
+}
+
+/** Returns non-zero if operation is a machine operand */
+static inline int is_op_machine_operand(const ir_op *op) {
+ return op->flags & irop_flag_machine_op;
+}
+
+/** Returns non-zero if operation is CSE neutral */
+static inline int is_op_cse_neutral(const ir_op *op) {
+ return op->flags & irop_flag_cse_neutral;
+}
+
+/** Returns non-zero if operation is a machine user op number n */
+static inline int is_op_machine_user(const ir_op *op, unsigned n) {
+ return op->flags & (irop_flag_user << n);
+}
+
+static inline unsigned _get_op_code(const ir_op *op) {